The prefabricated floor panel can include at least two planar panel members being spaced apart by and sandwiching a core, the core having at least one undulated inner support extending along a longitudinal axis and having summit portions, valley portions, and intermediate portions each extending between corresponding summit and valley portions, each of the summit, valley, and intermediate portions having opposed side edges, a span of the at least one inner support being defined between the opposed side edges, each side edge abutting against a corresponding one of the panel members, the undulated inner support having at least one sheet of wood material, fibres of said sheet of wood material being oriented normal to the panel members and parallel to the span, the at least one undulated inner support being laterally sandwiched between inner ribs with the summits being disposed adjacent a first one of the inner ribs and the valleys being disposed adjacent a second, opposite one of the inner ribs, the inner ribs being planar and having a span being defined between opposed side edges, each side edge of the inner ribs abutting against a corresponding one of the panel members.

A lightweight building board element, wherein the element has the shape of a first spatially extending wave, wherein the upper side of said element has at least one wave peak and the lower side of said element has at least one wave trough, wherein the first wave expands transversally or radially, and wherein the at least one wave peak and the at least one wave trough exist in the form of a second wave, and wherein the lightweight building board element contains or consists of bonded wood fibers or bonded wood shavings or bonded wood fibers and wood shavings.

A method for manufacturing a three-dimensionally deformed plate made of a wood fiber material comprises providing a prefabricated, flat wood fiber material plate as the original plate, preheating the original plate in sections, wetting the preheated section of the original plate with an atomized liquid mixture of water and a separating agent, introducing a section of the original plate that is preheated and wetted with a liquid mixture of water and a separating agent between two rollers of a molding station, wherein the rollers respectively provide a corrugated profile in the peripheral direction of the external surface, such that the original plate is being deformed in sections into a plate with a wave shape, wherein rollers are being used, the respective profiling of which has half-waves which follow one another in the peripheral direction and which at least partially have a different extension in the peripheral direction.

Wall panels for building construction may include a corrugated sheet including a first series of peaks on a first side of the corrugated sheet configured for positioning to face a room interior. The corrugated sheet may also include a second series of peaks on a second, opposite side of the corrugated sheet configured for positioning to face a room exterior. A radiant barrier including a material reflective to heat may be secured only to the second series of peaks. The corrugated sheet may form pockets of air between the radiant barrier and the corrugated sheet.

A modular device adapted for subdividing room space, the modular device comprising: a panel comprising a corrugated portion positioned between a first planar surface and a second planar surface of the panel, wherein the peaks of the corrugated portion are in engagement with the first planar surface, wherein the troughs of the corrugated portion are in engagement with the second planar surface; the first planar surface and the second planar surface each having a first end and a second end; wherein the first and second ends of the first planar surface are respectively opposite relatively to the first and second ends of the second planar surface; the second planar surface is parallel to the first planar surface; wherein the corrugations are is parallel to the vertical axis of the panel; a concave female portion positioned along the vertical axis in the panel, wherein the concave female portion is formed from at least: the first end of the first planar surface, the first end of the second planar surface, and a curved portion from the corrugated portion; a convex male portion positioned along the vertical axis of the panel, wherein the convex male portion is positioned outside of the second end of the first planar surface and the second end of the second planar surface; wherein to extend the length of the panel, the convex male portion of a first panel is adapted to engage with the concave female portion of a second panel.

A core layer suitable for a multilayer composite including at least one surface layer and one core layer, the surface layer arranged to at least partially cover the core layer and be fixedly connected thereto, wherein the core layer has elements composed of wood, which elements have plate-like regions arranged in zig-zag-shaped fashion, wherein a plate-like zig region of an element with an adjoining plate-like zag region of the element form a common edge between them, in such a way that the wood element of zig-zag-shaped form is formed, wherein elements of zig-zag-shaped form are arranged in the core layer such that two such edges of two different elements cross one another at a non-zero angle, and wherein the two elements are fixedly connected to one another at the crossing point. In one embodiment, a wood element of zig-zag-shaped form may be adhesively bonded to a planar wood element.

A modular device adapted for subdividing room space, the modular device comprising: a panel comprising a corrugated portion positioned between a first planar surface and a second planar surface of the panel, wherein the peaks of the corrugated portion are in engagement with the first planar surface, wherein the troughs of the corrugated portion are in engagement with the second planar surface; the first planar surface and the second planar surface each having a first end and a second end; wherein the first and second ends of the first planar surface are respectively opposite relatively to the first and second ends of the second planar surface; the second planar surface is parallel to the first planar surface; wherein the corrugations are is parallel to the vertical axis of the panel; a concave female portion positioned along the vertical axis in the panel, wherein the concave female portion is formed from at least: the first end of the first planar surface, the first end of the second planar surface, and a curved portion from the corrugated portion; a convex male portion positioned along the vertical axis of the panel, wherein the convex male portion is positioned outside of the second end of the first planar surface and the second end of the second planar surface; wherein to extend the length of the panel, the convex male portion of a first panel is adapted to engage with the concave female portion of a second panel.

The present invention is a twin-wall rigid plastic sheet intended to provide protection and insulation in applications where a small bending radius for the twin-wall plastic sheet is desired. The twin-wall configuration includes a smooth or flat outer single sheet and a contoured inner single sheet separated by a series of similar plastic ribs to form a connected row of longitudinal cavities or channels. The inner wall is contoured in a concave manner to form a relief between each rib. When the twin-wall sheet is flexed, each relief distorts to minimize stress in the transverse direction while maintaining high rigidity in the longitudinal direction. In another embodiment of the present invention, multiple single sheets separated by ribs and contoured similarly to that of the inner wall are added between the contoured inner wall and smooth outer wall.

Wall panels for building construction may include a panel of drywall material including a room-interior-facing surface and a room-exterior-facing surface and a radiant barrier including a reflective material located proximate to the room-exterior-facing surface. A corrugated sheet may be interposed between the panel of drywall material and the radiant barrier, the corrugated sheet forming pockets of air between the panel of drywall material and the corrugated sheet and between the radiant barrier and the corrugated sheet.

A core layer suitable for a multilayer composite including at least one surface layer and one core layer, the surface layer arranged to at least partially cover the core layer and be fixedly connected thereto, wherein the core layer has elements composed of wood, which elements have plate-like regions arranged in zig-zag-shaped fashion, wherein a plate-like zig region of an element with an adjoining plate-like zag region of the element form a common edge between them, in such a way that the wood element of zig-zag-shaped form is formed, wherein elements of zig-zag-shaped form are arranged in the core layer such that two such edges of two different elements cross one another at a non-zero angle, and wherein the two elements are fixedly connected to one another at the crossing point. In one embodiment, a wood element of zig-zag-shaped form may be adhesively bonded to a planar wood element.